Unfortunately, this whole "trespassing" thing, on which Greenhouse bases her outraged piece, is from an earlier Senate version of the bill, rather than the version actually signed by the governor. So the law doesn't just make it "appear as if the police are authorized to act only if they observe an undocumented-looking person actually committing a crime," it actually does that.A thing she'd have known if she'd simply gone to the bill's website where the various versions are.
It's nice to know that at the "paper of record" we are perfectly comfortable making stuff up.